Josh and Anna, who have four children together, have been going through marital struggles, with Josh entering rehab in August 2015 amid confessions of cheating on his wife and battling an addiction to Internet pornography.

Just months earlier, Josh, the eldest son of "19 Kids and Counting's" Jim Bob and Michelle Duggar, had admitted to molesting minors, including four of his sisters, when he was younger.

In January, Anna opened up about visiting her husband in rehab, describing the move as "an important step on a long, difficult road."